Atrioventricular block

September 18, 2011

Related Articles:

• Optimists will win illness
• Genetics to help cardiologists
• Hypothiazid
• Instructions for sulfokamfokain

Tweet

Atrioventricular block (AVB)   - It is one of the most dangerous cardiac conduction disorders, is to delay the pulse passing through the atrioventricular node, located between the atria and ventricles. It is accompanied by a sudden sharp AVB slow heart rate   to 20-40 beats per minute, loss of consciousness and symptoms of heart failure. According to WHO statistics, 17% of sudden deaths due to sudden heart failure occur on AVB.

AVB is classified in three degrees:

First degree   - Clinically manifested, characterized by a slight delay the passage of pulses and can be detected only during the electrocardiography . On this level no treatment, but in order to avoid escalation occurred in a higher degree, required to comply with the preventive measures consisting in a careful application anti-arrhythmic drugs   et al. Heart medications.

Second degree   characterized in that a portion of electrical pulses to the ventricles passes. There are disruption of the heart, sudden loss of consciousness. For diagnosis requires an electrocardiogram.

Third degree   - Is a complete atrioventricular block, characterized by a complete cessation of the pulse passes into the ventricles, which dramatically slow reduction. The patient may be unconscious in a dangerous condition that can lead to death.

Starting in the second degree, require surgical treatment of atrioventricular block and installation pacemaker .

Symptoms of atrioventricular block

Violations cross pulses can be caused by organic diseases, such as myocardial infarction . cardiomyopathy . coronary artery disease . heart disease . myocarditis   et al., which can cause an atrioventricular compound weakest link cardiac conduction system. Also, the reasons may be taking certain drugs from the group β-blockers . cardiac glycosides . antiarrhythmics   et al., as well as intense exercise.

In the first step of atrioventricular block noticeable symptoms are absent. When manifestations of cardiac conduction disorders, the patient complains of general weakness, fatigue, dizziness . shortness of breath . With bradycardia , The patient has hot flashes , Darkening of the eyes, a feeling of near unconsciousness, drop in blood pressure.

Diagnosing atrioventricular block

In assessing the presence of history turns endured in the past myocardial infarction and other cardiac pathologies, the fact of receiving drugs that violate the atrioventricular conduction. Held auscultation of the heart rate is determined pulse frequency of neck veins   in comparison with the carotid and radial artery.

Work is also a method of diagnosis of atrioventricular block ECG studies with daily monitoring to assess the extent of the blockade and bradycardia. Determined by a link with the activities of the patient or medication. Held cardiac electrophysiological study (EPS), to determine the indications for pacemaker implantation, and others. If necessary, additional laboratory tests conducted on the presence of comorbidities.

Treatment of atrioventricular block

When one degree does not require treatment, treatment 2 and 3 degree AVB is the implantation of a permanent pacemaker that will restore and maintain a normal heart rate. Thereafter, the disease is eliminated. In critical conditions using a temporary pacemaker.